iteragain/dist/es5/internal/CachedIterator.js

Javascript Iterable/Iterator/Generator-function utilities.

/**
 * @deprecated Use `SeekableIterator` instead.
 * @description Caches the values of the input `iterator` into a Map.
 */
var CachedIterator = /** @class */ (function () {
    function CachedIterator(iterator) {
        this.iterator = iterator;
        this.cache = new Map();
        this.i = 0;
        this.done = false;
    }
    CachedIterator.prototype[Symbol.iterator] = function () {
        return this;
    };
    CachedIterator.prototype.next = function () {
        var _a;
        var _b;
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        if (this.done)
            return { done: true, value: undefined };
        var next = (_a = this.iterator).next.apply(_a, args);
        if ((this.done = (_b = next.done) !== null && _b !== void 0 ? _b : false))
            return next;
        this.cache.set(this.i++, next.value);
        return next;
    };
    return CachedIterator;
}());
export { CachedIterator };
export default CachedIterator;
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